JPS6339907B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a copying apparatus equipped with collating means.

Typically, a collator has multiple sheet storage bins and operates in a collate mode in which a series of copies from the copier body are distributed one by one to separate pins. However, it is also possible to operate in a sorting mode in which copies are successively stored in one bin and when a predetermined number of sheets are stored, the sheets are stored in the next bin.

Conventional copying apparatuses equipped with a collator usually enable copying of the next document to be started after exposure is completed. Therefore, in a copying apparatus having a long copy conveyance path including a copying machine main body and a collator, the following problem occurs when a paper jam occurs.

To simplify the explanation, let N be the number of copies to be collated.
= 9, and the 8th and 9th copies of the 5th page are progressing through the conveyance path of the collator,
And the next 6th page copy is the 1st, 2nd,
Assume that the third sheet, a total of three sheets, is traveling through the conveyance path of the copying machine main body at the same time.

Now, when a jam occurs on the collator side, the copy conveyance path of the collator is stopped and only three copies in the main body of the copying machine are discharged to the temporary tray. However, the copies on the collator's transport path are treated as jammed copies and discarded. This is because it is very difficult to determine exactly how many copies are actually lost and to match these lost copies with the correct original document. Therefore, the 8th and 9th copies of 5 pages are treated as the number of jams. Therefore, if you use the collator to collate copies on the temporary tray using manual feed or the feeder in this state, or start copying from the copier, the 8th and 9th collators The order in which the copies are stacked in the bin, that is, the order of the pages, becomes out of order. This is because the copy on the temporary tray or the copy sent from the copying machine is not from the 5th page but from the 6th page.
This is because it belongs to the page.

In such cases, it is extremely troublesome for the operator to determine whether the jammed copy is from the 5th page or the 6th page, and depending on how the collator is configured, it may be impossible to determine at all. There is also. Furthermore, the fifth page of the original must be set and copied again, and the sixth page of the original must be set and copied again, making the operator's operations very complicated.

On the other hand, in a copier equipped with an automatic document handler (ADH), the ADH feeds originals one sheet at a time from a document tray to a copy position, where a single copy or series of copies are made. . After copying, the original will be automatically returned to the original tray.
If there is a next document, that document is fed to the copy position on the contact glass and a series of copies are made.

In conventional copying machines, in order to continue making copies at high speed, the original on the contact glass is returned to the original tray before the last copy enters the collator's bin, and the next original is placed on the contact glass. It is becoming more and more like this. Therefore, for example, if a jam occurs while the collator is collating copies of the first page, there will be a shortage of copies of the first page by the number of copies discarded due to the jam, that is. Although the first page of the original must be copied again to compensate, the ADH has already replaced the first page of the original with the second page of the original.
Therefore, this second page document is replaced with the first page document again.

However, this method of automatically returning the original using ADH when a jam occurs will damage the valuable original and also complicates the ADH mechanism itself.

Therefore, it is conceivable to permit copy start after confirming that the final copy of a series of copies of the same page has been stored in the collator's bin.

However, copying machines can operate not only in collation mode and sorting mode, but also in normal copying mode in which sheets are not distributed into bins, i.e., in which a paper output tray is used to eject copies from the copying machine body. This mode is used, for example, when copying the same page or portions of multiple different documents. Therefore, in the normal copying mode that uses the paper discharge tray, the number of copies is small, so correction in the event of a jam is easier than in the collation mode. For this reason, in normal copy mode, it is unnecessary to allow copy start after confirming that the final copy of a series of copies of the same page has been stored in the collator's bin; rather, priority is given to copy speed and paper feeding is performed. It is preferable to allow the next copy start when the number of copies (the number of copies of the same page) reaches the set number.

In view of these circumstances, the present invention allows the start of the next copy when the number of fed sheets reaches the set number in the normal copy mode, and allows the start of the next copy when the content of the sheet ejection counter reaches the set number in the collation mode. An object of the present invention is to provide a copying apparatus that allows the start of copying.

The invention will now be described in detail with reference to the illustrated embodiments.

In FIG. 1, a first
A collator 2 and a second collator 3 are arranged, and an automatic document handling device ADH is placed on a contact glass 4 of the main body of the copying machine.

The copying machine main body 1 has, around the photosensitive drum 5, a static elimination charger 6, a charging charger 7, a static elimination lamp 8, a developing unit 9, a transfer charger 10, a separation charger 11, a separation claw 12, and a cleaning unit 13. Reference numeral 14 denotes a halogen lamp as a scanner of the slit exposure device. The surface of the photoreceptor drum 5 is first subjected to charging treatment. The halogen lamp 12 moves to illuminate the original on the contact glass 4, and the reflected light is reflected from the first mirror 15 and the second mirror.
The light is reflected by the mirror 16, passes through the through lens 17, is reflected by the third and fourth mirrors 18 and 19, and slit-exposes the surface of the photoreceptor drum. The surface of the photoreceptor drum on which the latent image has been formed through the exposure process is then visualized with toner by the developing unit 9. Prior to this, the sheet sent out from the paper feeding section 20 by the lower paper feeding roller 21 and waiting at the registration rollers 23 is fed from the registration rollers 23 and superimposed on the toner image. Transfer charger 1
0, the toner image is transferred onto the sheet, and the sheet is separated from the surface of the photosensitive drum by the separation charger 11 and the separation claw 12, and sent to the fixing unit 25 by the conveyance tank 24. The fixed sheet is discharged to the outside of the machine via the discharge roller 26, and the first
Delivered to collator 2. The surface of the photosensitive drum is cleaned by a cleaning unit 13 and reused.

A sheet feed unit sheet detector 22 is provided near the sheet gripping side of the registration roller 23 to monitor sheet feeding.

The automatic document handling device ADH has a driving roller 36 on the scanner's home position side on the contact glass 4, and a driven roller 36' on the other end, and a conveying belt 38 for conveying the original between the two rollers.
is wrapped around it. 37 is this conveyor belt 38
This is an electromagnetic clutch for driving the drive roller.

Above this conveyor belt 38 is a document tray 40.
are arranged, and the document 40' on the tray is passed through a paper feed roller 30 and a fixed separation roller 32, which are in contact with each other.
Only one sheet is taken out at a time. This removal is controlled by an electromagnetic clutch 31 for driving the paper feed roller. Then, the taken out document waits at a position of a pair of registration rollers 33 and 34 provided in the middle of a path 44 from the paper feed roller 30 to the entrance of the conveyance belt 38. When the registration rollers 34 are started to rotate by the electromagnetic clutch 35 for driving the registration rollers, the document in this waiting position is transferred to the path 44.
It is sent to the conveyor belt 38 along. Then, by a conveyor belt 38 controlled by a clutch 37,
It moves between the belt and the contact glass, comes into contact with the stop claw 39' at the other end of the contact glass, and comes to rest. When the next document is replaced, the stop pawl drive solenoid 39 is activated to release the stop pawl 39', and the document on the contact glass is moved to the document tray 4.
Allow it to return to 0. Reference numeral 41 denotes a sheet detector (registration document detector) in the registration roller section, 42 a document discharge detector, and 43 a document detector on the document tray 40.

The first collator 2 includes a feeder section B located below the sheet alignment section A, a vertically movable deflection device C for feeding copies into a required bin, and a paper alignment section A that supports this deflection device. Alternatively, it is provided with a conveyance section D, a bin row E, and a motor M for conveying copies from the feeder section B to the deflection device.

In FIGS. 1 and 2, copies ejected from the copying machine main body 1 are sent to the first collator 2 in the direction of arrow P.
The sheet enters the sheet, is gripped by a pair of receiving rollers 46 while being monitored by a sheet receiving detector 45, and is then temporarily discharged via a pair of discharge rollers 49 according to the position of a receiving guide plate 48 which is controlled by a guide plate solenoid 47. The paper is discharged onto the tray 50, or when collating or sorting is performed, the paper is moved forward horizontally and sent to the diagonal rollers 51.

Due to the action of the diagonal roller 51, the copy is brought to a reference plate (not shown), placed in a fixed position and posture by the reference plate, and sent to the intermediate roller pair 52. Then, when the collator branching plate 54 in the feeder section B is at the solid line position in the figure, the collator is sent to the conveyance section D, and when the branching plate 54 is at the dotted line position, it is sent out to the second collator 3 via a pair of delivery rollers 55. . An intermediate roller sheet detector 53 is arranged behind the intermediate roller pair 52. In the case of a copy jam or failure in the area after the diagonal roller section,
Except for the rotation of the receiving roller pair 46 and the ejecting roller pair 49, the rotation of all other rollers is stopped, the receiving guide plate 48 is at the position indicated by the solid line, and all the copies that are continuously sent are sent to the temporary tray 50. .

The dashed-dotted line section F shown in FIG. 2 is the manual feed section,
Insert the paper along the lower guide plates 56 and 57 in the direction of the arrow. When the reworked sheet detection sensor 58 detects a sheet, the manual feed section roller 59 starts rotating by actuating a clutch (not shown) provided on the manual feed section roller, provided that manual feeding is possible. When the paper advances further, it reaches the manual feed section roller 59, and the manual feed section roller 59 sends the paper to the receiving roller pair 46.

The feeder section B and the paper arrangement section A are hinged to each other on the rear side, and the paper arrangement section A can be lifted upward from the front. Thereby, it is possible to easily remove jammed paper on the conveyance path and set the copy stack on the paper feed tray 60. A feeder section sheet detector 61 detects the presence or absence of paper on the paper feed tray 60.

In the conveying section D, a conveying belt 64 is hooked around a driving roller 62 and a driven roller 63, and the driving roller 62 is driven by a motor M via an electromagnetic clutch 65.

In FIG. 3, the conveyor belt 64 is hooked around a drive roller 62 and a driven roller 63, and a first chain 68 is hooked around a sprocket 66 fixed to the shaft of the drive roller 62 and a sprocket 67 loosely attached to the shaft of the driven roller 63. ing. in this case,
Since the diameter of sprocket 66 is smaller than the diameter of drive roller 62, the speed of chain 68 is slower than that of the conveyor belt. Furthermore, chain 68
are each sprocket 69 provided in the conveyance section and sprockets 70, 71, 7 provided in the deflection device C.
It is hung on 2,73.

The deflection device C is arranged to rise when the ascending chain 68 and the sprocket of the deflection device are fixed, and to descend when to fix the descending chain and the deflection device. For this purpose, a spring clutch 74 is attached to a sprocket 70 mounted on the fixed shaft of the deflection device. This clutch 74 is controlled by a lifting solenoid 75 via a lever 76, and by energizing the solenoid 75, the clutch 74 is released and the sprocket 70 is released.
becomes free, only the chain 68 rotates, and the deflection device C does not move. When the lifting solenoid 75 is deenergized, the lever 76 is spring-backed and the sprocket 70 is locked onto its fixed shaft via the clutch 74, so that the sprocket 70 and therefore the deflection device C are entrained in the lifting chain 68. Ru. When the deflection device C rises to the highest position where it should be stopped, it operates the home position switch 85 (FIG. 6), which energizes the solenoid 75, and when the clutch 74 is released, the deflection device C moves to the chain 68. The connection is severed and the ascent stops.

The downward movement of the deflection device C is basically the same as the upward movement described above, but it is important that it must descend by a precisely determined amount. For this purpose, as shown in FIG. 4, a sprocket 73 that engages with the chain 68, a spring clutch 77 attached to this sprocket, an electromagnetic clutch 79 provided between this spring clutch 77 and a shaft 78, and a A descending solenoid 80 for connecting and disconnecting, a lever 81 connected to the plunger of this solenoid, and a cam sleeve having a notch 82a for engaging and disengaging with one end of the lever, and controlling the connection and disconnection of the spring clutch 77. 82 is provided. A further sprocket 83 is fixed to the shaft 78, as shown in FIG. 5, and this sprocket 83 meshes with a second chain 84 which is fixed to the conveyor and therefore stationary.

When the lowering solenoid 80 is deenergized, the engaging end of the lever 81 engages with the notch 82a of the cam sleeve 82 and disconnects the spring clutch 77. Therefore, even if the sprocket 73 is rotated by the chain 68, the shaft remains unchanged. 78 does not rotate, and the deflection device C is stopped. When the lowering solenoid 80 is energized, the engaging end of the lever 81 is disengaged from the notch 82a of the cam sleeve, the spring clutch 77 is brought into contact, and the rotation of the sprocket 73 by the chain 68 turns on the electromagnetic clutch 79, which is normally on. This causes another sprocket 83 to rotate together with the shaft 78;
3 will roll along the stationary second chain 84, and the deflection device C will eventually descend. The lowering solenoid 80 is deenergized again immediately after the engaging end of the lever 81 is disengaged from the notch 82a of the cam sleeve, so the engaging end of the lever 81 moves around the cam sleeve 82 while maintaining the engaged state. sliding along the surface,
After half a turn, the cam sleeve 82 is stopped by engaging with another notch 82a. Therefore, the spring clutch 77 is again in the disengaged state, and the deflection device C is moved according to the shaft 78 and the sprocket 83 fixed thereto.
stops. In this way, when the deflection device C is lowered, it is lowered exactly by a distance corresponding to half the circumference of the cam sleeve 82, which distance corresponds to the distance between adjacent bins.

In FIG. 6, the driving roller 62 and the driven roller 6
A vacuum chamber 87 is disposed between both running sides of the conveyor belt 64, which is placed between the conveyor belt 3 and the conveyor belt 64, and is constantly maintained at a negative pressure by a blower 88. A large number of suction holes are provided in a row in the wall portion of the vacuum chamber 87 that is opposed to the pin row and is in contact with the conveyor belt, and the conveyor belt 64 is also provided with suction holes. 86 is an end detection switch for lowering the deflection device. When the copy comes to the point where the suction hole in the vacuum chamber and the suction hole in the conveyor belt match, the copy is attracted by the conveyor belt and is carried along with its movement until it reaches the deflection device C, where it is deflected as shown in FIG. It is deflected by a cam 89 and fed into a predetermined pin.

In FIG. 7, the copies sent to the deflection device C by the conveyor belt 64 are transferred to the guide of the deflection cam 89 attached to each bin, which corresponds to the bin where the deflection device is stopped in order to feed the copies. Since the cam is located at a position protruding from the conveyor belt 64, the curved surface of the guide cam is spaced apart from the surface of the conveyor belt 64, and the guide plate 90 carried by the deflection device 64,
91, is gripped by a pair of discharge rollers 92, and discharged into a bin.

The deflection cam 89 is held at a position protruding from the surface of the conveyor belt 64 by locking a deflection cam drive lever 93 provided on the deflection device C at the solid line position. When the deflection device is lowered, this deflection cam drive lever 93 is in the solid line position, causing the required guide cam to protrude from the conveyor belt surface, but when the deflection device is raised, it moves to the position shown by the broken line, and comes into contact with each guide cam. be prevented from doing so. Control of this lever 93 is performed by the above-mentioned lifting solenoid 75. That is, when the lifting solenoid 75 is OFF, the deflection device C rises with the lever 75 at the position shown by the broken line in FIG. position, and the deflection device C is in a state in which it expects the lowering solenoid 80 to be turned on. 94 is a deflection section sheet detector.

Figure 8 shows the control circuit for the ADH and collator described above, and the parts surrounded by broken lines are
The ADH control unit is shown.

In the ADH control unit 100, SWI is an ADH select switch, 131 is a clutch control circuit for the electromagnetic clutch 31 for driving paper feed rollers, 135 is a clutch control circuit for the electromagnetic clutch 35 for driving registration rollers, and 137 is an electromagnetic for driving conveyor belt driving rollers. A clutch control circuit 139 for the clutch 37 is a solenoid control circuit for the stop pawl drive solenoid 39.

Original 4 with original detector 43 set to ADH
0' is detected, when the ADH select switch SW1 is turned on, the ADH select signal S1 is output from the inverter _IN1 connected to the switch.
is output and flip-flop 101 is set. The output of flip-flop 101 has 3 inputs.
It is input to the first input terminal of AND gate 102.
A second input terminal of this AND gate 102 is connected to the registration original detector 41 through an inverter _IN3 . At first ADH registration roller pair 3
No manuscript exists in 3 and 34. Therefore, since the registration document detector 41 does not detect a document, the output of the inverter IN ₃ , that is, the second
The input is "1". Further, the third input terminal of the AND gate 102 is connected to the output terminal of the AND gate 108 through the inverter _IN2 , but as will be described later, the output of the AND gate 108 is "0", that is, the registration roller drive signal S4 is not output. Therefore, the output of inverter IN ₂ , that is, AND gate 10
The third input of 2 is also "1". Therefore, the AND gate 102 outputs the paper feed roller drive signal S2 to the clutch control circuit 131 at the same time as the switch SW1 is turned on. As a result, the electromagnetic clutch 31 is engaged, the paper feed roller 30 of the ADH rotates, and the uppermost sheet of the document 40' is separated and sent out in cooperation with the fixed separation roller 32.

The original is sent to a pair of registration rollers 33 and 34,
When the registration document detector 41 reaches the position, the detector detects the document. Therefore inverter
The output of IN ₃ becomes “0” and the AND gate 102
The paper feeding roller drive signal S2 disappears, and paper feeding is stopped. Therefore, the original is registered with the pair of registration rollers 33 and 34.
The registration roller pair is held at the position in which the registration roller pair is expected to rotate.

On the other hand, the ADH select signal S1 is also input to the transport time generation circuit 106. This conveyance time generating circuit 106 is configured so that the document is transferred to the pair of registration rollers 3.
This circuit generates a time period T ₀ for conveying an original document, from when the document is sent out from 3 and 34, enters the conveyor belt 38 on the contact glass, is conveyed by the belt, and is stopped by the stop claw 39'. The output of this transport time generation circuit 106 (transport time signal S3)
The control circuit 137 of the electromagnetic clutch 37 for driving the drive roller of the conveyor belt 38 and the AND gate 10
8 and the delay circuit 107.

When the control circuit 137 receives the conveyance time signal S3, it outputs a signal that turns on the electromagnetic clutch 37 of the conveyor belt drive roller 36. electromagnetic clutch 3
7 is activated, the drive roller 36 rotates and the conveyor belt 38 connected thereto begins to move. In this case, the stop pawl 39 is in a protruding position because the flip-flop 105 provided in front of the stop pawl drive solenoid control circuit 139 has been reset through the OR gate 104 by the ADH select signal S1.

After the conveyor belt 38 begins to move, the delay circuit 1
07, the transport time signal S3 is input to the first input terminal of the AND gate 108 after a slight delay. Therefore, a registration roller drive signal S4 is generated at AND gate 108 and input to clutch control circuit 135 and inverter _IN2 . The clutch control circuit 135 outputs a signal to turn on the electromagnetic clutch 35 for driving the registration roller. When the electromagnetic clutch 35 is turned on, the pair of registration rollers 33 and 34 begin to rotate. Therefore, the document waiting in the pair of registration rollers is sent out, and the document is sent out to the path 44.
is transferred to the conveyor belt 38 through the. The document is conveyed by the conveyor belt 38 over the contact glass to the stop pawl 39'.

The conveyance time generating circuit 106 outputs an output signal at the time when the document reaches the position of the stop pawl 39'.
Turn off. When the conveyance time signal S3 disappears, the electromagnetic clutch 37 of the conveyor belt drive roller 36 is activated.
OFF and the conveyor belt 38 stops. Therefore 1
The first sheet of the document is set on the contact glass 4 at a position where its leading edge abuts the stop claw 39'. It should be noted that the registration roller pair 33, 34 also stops at the same time because the drive signal S4 thereof disappears due to the disappearance of the signal S3.

The original set on the above-mentioned contact glass is changed by the original exchange signal S8 generated by the collator control section shown not surrounded by a broken line in FIG.
It will be automatically replaced with the next one.

In the collator control section shown in FIG.
The drive circuit 180 is a deflection unit moving circuit that controls the ascending solenoid 75 and descending solenoid 80 of the deflecting device C. 109 is a sheet acceptance counter for the sheet detected by the sheet acceptance detector 45;
Reference numeral 110 denotes a sheet trailing edge detection circuit which extracts a sheet trailing edge signal S5 in the form of a pulse from the logical product of the sheet detection signal of the deflection section sheet detector 94 and a signal obtained by slightly delaying and inverting the signal. A sheet discharge counter 111 counts the number of sheets discharged from the deflection device C to the bin E based on the sheet trailing edge signal S5. Reference numeral 112 denotes a jam detection circuit, which determines the sheet conveyance time T ₁ +δ from when the sheet is detected by the sheet acceptance detector 45 until the sheet is detected by the deflection section sheet detector 94, and when the deflection section sheet detector 94 detects the sheet. Transport time T ₂ +δ from detection to completion of passing through the detector 94
It is configured as a timer circuit that creates This jam detection circuit generates a jam detection signal S6 when it is not reset even after the predetermined time has elapsed. Reference numeral 113 is a comparison/arithmetic circuit, into which the set number of sheets N, paper feed counter information, and mode signal are input from the copy control section. The copy control unit outputs a mode signal corresponding to the set mode when collation mode, sorting mode, or normal copy mode is set by the operation unit, and stores the number N set by the number register in a register. , and the number of sheets fed in the copying operation for N sheets, that is, the number of sheets that have been copied, is counted by a sheet feeding counter. Further, the copying machine main body 1 starts a copying operation by turning on a print switch under the control of a copying control section, and copies a set number N of sheets. Comparison calculation circuit 113
recognizes the setting mode by the mode signal and selects the first
As shown in Figure 2, in the collation mode, the contents of the sheet ejection counter 111 are compared with the set number of sheets (the contents of the above register), and when the two match, the deflection device rise signal S7 and the original exchange signal S8 are output, and the sorting is started. In the normal copy mode and the normal copy mode, the content of the paper feed counter is compared with the set number of sheets, and when the two match, a document exchange signal S8 is output. Further, when the jam detection signal S6 is generated, the comparison/arithmetic circuit 113 subtracts the contents of the sheet discharge counter 111 from the sheet reception counter 109 to calculate the number of sheets n that will be lost due to a jam (the number of jammed sheets), Information to that effect is output to the copy control unit. Here, the number n of jams is determined by the sheet receiving detector 45.
This refers to the number of sheets existing between 1 and the discharge roller 92 of the deflection device.

Now, the copying machine body 1 is set to collation mode.
starts, a series of copying processes are performed, and when a copy sheet is ejected from the ejection roller 26, the sheet is gripped by a pair of receiving rollers 46, 46 of the collator. A sheet is detected by the sheet acceptance detector 45, and its output is sent to the sheet acceptance counter 1.
09 and is input to the jam detection circuit 112. The sheet receiving counter 109 counts +1 when the leading edge of the sheet is detected and the trailing edge of the sheet is detected. The jam detection circuit 112 starts measuring the sheet conveyance time T ₁ +δ to the deflection section sheet detector 94.

The sheet passes through the diagonal roller section and the intermediate roller pair 52.
It is then sent to the conveyor belt 64. The sheet conveyed by the conveyor belt 64 is separated from the surface of the conveyor belt 64 by the bending of the deflection cam 89, gripped by a pair of discharge rollers 92, and discharged into a bin. At this time, the sheet to be discharged is detected by the deflection section sheet detector 94.
The output is detected by the sheet trailing edge detection circuit 11.
0, the sheet discharge counter 111, and the jam detection circuit 112. Jam detection circuit 11 that measures the above-mentioned sheet conveyance time T ₁ +δ
The timer circuit No. 2 is reset by the sheet leading edge detection by the detector 94, and the jam detection signal S6 is not generated.

FIG. 10 shows circuit elements 109 to 112 and 18.
This figure shows the details of the parts mainly required in the collation mode in the circuit including 0. When the reflective optical sensor 95 of the deflection section sheet detector 94 detects a sheet that has passed through the deflection device C and is sent to the bin, the phototransistor becomes conductive, and the inverted input signal of the operational amplifier 210 becomes higher than the non-inverted input signal. As a result, an L level signal is output from the operational amplifier 210, and is inverted through the inverter 211 to produce a signal 211' as shown in FIG.
NOR gate 333, open collector buffer 330 and NAND gate 2
12 is input. A CR delay circuit 331 follows the buffer 330. This delay circuit 33
1, the output signal of inverter 211 becomes a slightly delayed signal, and the output signal of inverter 332 becomes a slightly delayed signal.
The signal 33 as shown in FIG.
2′, NOR gate 333 and
These become input signals for the other side of the NAND gate 212, respectively. Therefore, as shown in Figure 11, NAND
A sheet leading edge detection signal 21 is output from the gate 212.
2' is also taken out from the NOR gate 333 as a sheet end detection signal 333', S5 in the form of a pulse.

Tip detection signal 21 from NAND gate 212
2' triggers the timer circuit of the jam detection circuit 112 and starts measuring the time T ₂ +δ. Next, when the sheet is safely discharged into the bin, the circuit logic of the NOR gate 333 is established, the sheet end detection signal 333' is output, and the jam detection circuit 11
2 reset input terminal. The jam detection circuit is reset before the predetermined timer period elapses, so the jam detection signal S6 is not output in this case. Moreover, if the predetermined timer time T ₂ +δ
If the end of the sheet is not detected by then, the jam detection circuit 112 will not be reset.
A jam detection signal S6 is output.

On the other hand, the trailing edge detection signal 333' from the NOR gate 333 is input to the sheet ejection counter 111.
It is also input to the monostable multi-circuit 340 via a gate (not shown) (only in collation mode). The counter 111 counts +1, and the monostable multicircuit 340 generates a pulse with a time width determined by the CR circuit 341. This pulse is applied to the subsequent open collector buffer 342, transistor 34
3, the solenoid 80 (FIG. 4) for lowering one bin is actuated. As a result, the cam sleeve 82 makes a half turn, and the deflection device C descends by one bin, and is fixed at the position of the next bin.

In the same manner as described above, the next sheet is discharged to the next bin while being checked by the deflector sheet detector 94. Thereafter, the process sequentially moves to the next bin.

As the deflection device C sequentially descends, the comparison/arithmetic circuit 113 compares the designated number N inputted in advance from the copy control section with the contents of the sheet discharge counter 111 each time. If the two match, the comparison/arithmetic circuit 113 outputs a document exchange signal S8 to the transport time generation circuit 106 of the ADH control section, sends a copy start permission signal to the copy control section, and also outputs a copy start permission signal to the inverter movement circuit 180 of the deflection section movement circuit 180. A deflection device raising signal S7 is output to 310. Before receiving the copy start permission signal, the copy control section invalidates the press of the print switch and prohibits the next copy start.

When the deflection device rise signal S7 is generated, or when the end switch 86 (Fig. 6) is turned on after the collation of the total number of bins of the collator 1 is completed, the deflection device C is raised to the highest position as follows. is returned to the first bin position.

When the end switch 86 is turned on, the input of the inverter 310 becomes L level, and the inverter 3
Inverted by 10, JK flip-flop 3
It becomes an input signal of the J input terminal of 45 and the inverter 344. At this time, JK flip-flop 345
The direct reset input of the inverter 344 is at the H level, and the clock input is also at the H level due to the voltage of the capacitor C charged by the output of the inverter 344. For this reason, the flip-flop 345 which was initially in the reset state with the K input connected to ground potential.
is set when the J input is applied, the T input changes to L level, and the Q output becomes H level. The output signal of this JK flip-flop 345 is connected to open collector inverters 346 and 348.
is input. Transistors 347 and 349 connected to these inverters respectively
The lift solenoid 75 (FIG. 3) and the electromagnetic clutch 79 (FIG. 4) are turned OFF. When the electromagnetic clutch 79 is turned OFF, the sprocket 73 becomes free to rotate with respect to the shaft 78, and when the lifting solenoid 75 is turned OFF, the sprocket 70 is locked to its rotating shaft, so that the deflection device C starts to rise.

When the deflection device C moves upward and reaches the position of the home position switch 85 (FIG. 6) and turns on the switch, the input to the inverter 300 becomes L level. The output signal inverted by the inverter 300 is sent to a NAND gate 301, an open collector buffer 302, and a NOR gate 305.
becomes the input signal. The output signal of NOR gate 305 is the reset input of JK flip-flop 345.
It becomes RD and resets the flip-flop. This causes transistors 347 and 349 to
It is in the ON state, and the lifting solenoid 75 and electromagnetic clutch 79 operate. Lifting solenoid 75
The spring clutch 74 is released and the deflection device C is fixed to the uppermost first bin. On the other hand, the signal output from the buffer 302 passes through the RC delay circuit 303 with a slight delay, and is then transferred to the inverter 304.
After being inverted by , it becomes the other input signal of the NAND gate 301 and inhibits the gate 301 . Therefore, the NAND gate 301 outputs a pulse for a certain period of time when the home position switch 85 is turned on. This pulse resets the sheet detection counter 111.

Thus, we return to the initial state.

As described above, the document exchange signal S8 is generated only after it is confirmed that the final copy of the same page of document has been stored in the bin.

When the original exchange signal S8 is generated, the flip-flop 105 of the ADH control section is set and the stop pawl drive solenoid 39 is activated. Further, the conveyance time generation circuit 10 receives the original exchange signal S8.
6 outputs the conveyance time signal S3, and in the same way as in the previous case, first the electromagnetic clutch 37 is engaged and the conveyor belt 38 begins to move, and then the electromagnetic clutch 37 is engaged and the conveyor belt 38 begins to move.
5 enters. Therefore, the first document on the contact glass 4 is ejected by the conveyor belt 38, and the second document is sent to the conveyor belt 38. The first document discharged from the top of the contact glass is detected by the document discharge detector 42, and when the document trailing edge detection circuit 103 detects the trailing edge of the first document, the output of the document is sent through the OR gate 104. Flip-flop 105 is reset. Therefore, the stop pawl driving solenoid 39 is turned off, and the second document is stopped at the position of the stop pawl 39'.

The collator operation for this second original is the same as for the first original.

Next, the operation when a jam occurs in the collator will be explained.

If the deflection unit sheet detector 94 does not detect the sheet even after the predetermined time T ₁ +δ has elapsed since the sheet acceptance detector 45 detected the sheet, or after the deflection unit sheet detector 94 detects the leading edge of the sheet. If the detector does not detect the trailing edge of the sheet after a predetermined time T ₂ +δ, the jam detection circuit 112 generates a jam detection signal S6. This signal S6 is input to the receiving guide plate drive solenoid circuit 147, the clutch drive circuit 165, and the comparison/arithmetic circuit 113. The clutch drive circuit 165 turns off the electromagnetic clutch 65 of the conveyor belt of the collator.
As a result, the rotations of the receiving roller pair 46 and the discharging roller pair 49 to the temporary tray are stopped. At the same time, since the receiving guide plate drive solenoid 47 is turned on, all sheets entering the collator after jamming are discharged to the temporary tray 50.

The comparison/arithmetic circuit 113 receives the jam detection signal S6.
When input, to calculate the number of jams n,
The contents of the sheet discharge counter 111 are subtracted from the sheet reception counter 109, and the obtained calculation result (the number of jams n) is outputted to the copy control section through a line. During normal operation without jamming, the copying machine main body 1 continuously sends out a series of copy sheets with a set number N.
When the information is input, a copy with the number of jams n added thereto is sent out under the control of the copy control section. Therefore, the number of sheets ejected to the temporary tray 50 is the number of sheets that takes into account the number n of jammed sheets.

The copy sheet discharged to the temporary tray 50 is
Manual feed section F (Fig. 2) or feeder section B (Fig. 1)
It is collated using .

FIG. 9 shows the control circuit of this feeder section B. Set the sheet on the paper feed tray 60 of the feeder section and turn the feeder section paper feed start switch SW _2.
Turn on. Since the feeder section sheet detector 61 outputs a sheet detection signal to the AND gate 114, the ON signal from the inverter IN ₄ connected to the switch SW ₂ enters the flip-flop 117 through the AND gate 114 and the OR gate 116, and is output to the flip-flop 117. Set. flipflop 117
The clutch control circuit 196 is activated by the set output of the clutch control circuit 196. This clutch control circuit 196
Separation roller 9 fixed to feeder part B as shown in the figure.
The electromagnetic clutch 98 of the paper feed roller 96 provided opposite to the paper feed roller 7 is turned on. The clutch operates and the paper feed roller 96 begins to rotate, feeding out the topmost sheet of the copy stack. When the copy sheet reaches the pair of intermediate rollers 52, it is detected by the intermediate roller sheet detector 53, and the output of the detector is sent to the sheet leading edge detection circuit 118 and the sheet trailing edge detection circuit configured in the same manner as in FIG. It is input to circuit 119. When the sheet leading edge detection signal is output from the circuit 118, the flip-flop 117 is reset by the signal, and the paper feed roller 96 in the feeder section stops rotating. The sheet trailing edge detection signal from the sheet trailing edge detection circuit 119 is delayed by a delay circuit 120 for a certain period of time, and then enters the flip-flop 117 through an AND gate 115 and an OR gate 116 to set the flip-flop again.

When the flip-flop 117 is set, the paper feed roller 96 rotates and the next sheet is sent out. When all the sheets on the feeder tray 60 of the feeder section are fed out and the feeder section sheet detector 61 no longer detects any sheets, the outputs of the AND gates 114 and 115 become "0", and the feeder section ends the sheet feeding. .

In this case, since the deflection device C initially stops at the same bin as when jamming, it collects the sheets from the feeder section B and descends from the next bin position. When the contents of the sheet receiving counter 109 and the sheet discharging counter 111 become equal, the comparison/arithmetic circuit 113 outputs the document exchange signal S8, as in normal operation, and the document is automatically exchanged and the deflection is performed. Device C is returned to its home position.

With the above operation, the collation process during jamming is completed, and both the main body of the copying machine and the collator return to normal operation.

On the other hand, when the sorting mode is set and the print switch is pressed, copy sheets ejected from the copying machine main body 1 are ejected into the same bin. That is, the comparison calculation circuit 113 recognizes that the set mode is the sorting mode based on the mode signal from the copy control section, compares the paper feed counter information from the copy control section and the set number of sheets information, and compares the information between the two.
The deflection device moving circuit 180 is turned off until the values match. The deflection device C therefore remains stationary and the copy sheets are ejected into the same bin. Then, when the paper feed counter information matches the set sheet number information, the comparison calculation circuit 113 outputs a document exchange signal S.
8 and sends a signal to the deflection device moving circuit 180 to operate the solenoid 80 for lowering one bin, thereby lowering the deflection device C by one bin, applying a reset signal to the sheet discharge counter 111, and further controlling copying. sends a copy start permission signal to the unit. The operation when a jam occurs in the collator is the same as in collation mode.

When used in the normal copying mode, the print switch is pressed after the collator 2 is separated from the copying machine main body 1 and the paper discharge tray is attached to the paper discharge section of the copying machine main body 1. The copy sheet discharged from the copying machine main body 1 is stored in a paper discharge tray. The comparison/calculation circuit 113 recognizes that the setting mode is the normal copy mode based on the mode signal, compares the paper feed counter information from the copy control unit and the set number of sheets information, and when the two match, copies the paper to the copy control unit. Send start permission signal.

Incidentally, in the normal copying mode, the temporary tray 50 on the collator 2 can also be used as a paper discharge tray. In this case, the comparison/arithmetic circuit 113 sends a signal to the receiving guide plate drive solenoid circuit 147 and the clutch drive circuit 165 to
is moved to the dotted line position and the clutch 65 is turned off to stop the rotation of the receiving roller pair 46 and the ejecting roller pair 49 to the temporary tray 50, thereby stopping the rotation of the copy sheet from the copying machine main body 1. What is necessary is to discharge it to the temporary tray 50.

As described above, according to the present invention, in the collation mode, the start of the next copy is permitted when the content of the sheet ejection counter becomes equal to the set number of sheets, so it is confirmed that the last copy of the same page has been stored in the bin. The original can be replaced after the original is removed, which reduces the risk of damage to the original and simplifies the structure of the ADH.
Moreover, normal document exchange can be performed while the deflection device returns to its home position, thereby eliminating time loss. Furthermore, in the normal copy mode, the start of the next copy is permitted when the number of fed sheets becomes equal to the set number of sheets, so the copy speed can be increased.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of one embodiment of the present invention, and FIG.
The figure is an explanatory diagram of the sheet alignment section in the same embodiment, FIG. 3 is an explanatory diagram showing the cooperative operation of the conveying section and the deflection device in the same embodiment, and FIG. 4 is an illustration of the deflection device for lowering in the same embodiment A diagram showing the clutch control mechanism, FIG. 5 is an explanatory diagram of the stepwise feeding of the deflection device, FIG. 6 is an explanatory diagram of the conveyance section in the above embodiment, and FIG. 7 is a diagram showing the cooperation between the deflection device and the deflection cam of the above embodiment. 8 is a block diagram showing the control circuit of the ADH and collator in the above embodiment, FIG. 9 is a block diagram showing the control circuit of the feeder section of the above embodiment, and FIG. 10 is a block diagram showing the control circuit of the collator in the above embodiment. A detailed diagram showing a part of the control circuit, FIG. 11 is a timing diagram showing how to detect the leading and trailing edges of the sheet in the above embodiment, and FIG. 12 is a flowchart showing a partial operation of the comparison calculation circuit in the above embodiment. It is. 1...copying machine body, 2, 3...collator, 4...
... Contact glass, 22 ... Paper feed unit sheet detector, 30 ... ADH paper feed roller, 33, 34 ...
Registration roller, 31, 35, 37...Electromagnetic clutch, 38...Transport belt, 39...Stop claw drive solenoid, 40...Document tray, 41, 4
2, 43...Detector, 45...Sheet acceptance detector, 48...Acceptance guide plate, 50...Temporary tray, 52...Intermediate roller, 53...Intermediate roller section sheet detector, 60...Paper feeding Stand, 61...Feeder section sheet detector, 64...Transport belt, 65...
...Electromagnetic clutch, 85 ... Home position switch, 86 ... End switch, 92 ... Discharge roller, 94 ... Deflection section sheet detector, 96 ... Feeder section paper feed roller, 96 ... Electromagnetic clutch, 1
00...ADH control unit, 109...Sheet reception counter, 111...Sheet discharge counter, 112
. . . Jam detection circuit, 113 . . . Comparison/arithmetic circuit, 147 .

Claims (1)

[Claims] 1. In a copying apparatus having a plurality of bins and a paper ejection tray, a storage means for storing the number of sheets set, a sheet ejection force counter for counting the number of sheets ejected to the bin, and a sheet ejection force counter for counting the number of sheets ejected to the bin, and a sheet ejection force counter for counting the number of sheets ejected to the bin in the normal copying mode. means for permitting the start of the next copying when the content of the sheet discharge counter becomes equal to the content of the storage means, and means for permitting the start of the next copying when the content of the sheet ejection counter becomes equal to the content of the storage means in a collation mode. A copying device characterized by: